dolfin team mailing list archive

[Anders Logg <logg@xxxxxxxxx>]

On Sun, Jun 21, 2009 at 11:36:29PM -0600, Bartosz Sawicki wrote:
> On 19/06/09 02:53 PM, kent-and@xxxxxxxxx wrote:
> > When using VMTK the boundary indicators are stored as a set of arrays
> > with names
> > boundary facet cells,
> > boundary facet numbers
> > boundary indicators
> > The two first arrays are used to find the global facet numbers.
> > The function computes a mesh function based on these arrays.
> > 
> > This was what Anders prefered since VMTK does not now anything
> > about the global numbering of facets in Dolfin (without linking it into
> > Dolfin).
> > 
> > This is not a VMTK specific problem, but I do think VMTK is the only
> > mesh-generator
> > that let you store boundary indicators at the moment. I guess we should add
> > this to NetGen as well, both Hans Petter Langtangen and Douglas Arnold has
> > bugged
> > me about this the last few days.
> 
> I'm every day user of this functionality. I use Netgen generated models, 
> but also other software which add boundary indicators to existing 
> meshes. Netgen supports boundary indicators quite well, both by geo 
> files, and by GUI. I don't understand what you want to add?

Is it possible to set DOLFIN boundary indicators from Netgen? I didn't
know.

Meshing is a problem for us. I don't know what the long-term goal
is. Netgen is good but it would be nice if the interface could be
updated to a modern toolkit instead of Tk.

One option could be to add meshing capabilities to MeshBuilder (using
an external library like Netgen).

I'd like a tool where I can

  1. draw simple domains in 2D / 3D
  2. import CAD geometry
  3. set boundary indicators
  4. create and export Mesh in DOLFIN XML

-- 
Anders

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